add RethinkDB plugin

plugins/rethinkdb/rethinkdb_data.go

@@ -0,0 +1,110 @@
+package rethinkdb
+
+import (
+	"reflect"
+	"time"
+
+	"github.com/influxdb/telegraf/plugins"
+)
+
+type serverStatus struct {
+	Id      string `gorethink:"id"`
+	Network struct {
+		Addresses  []Address `gorethink:"canonical_addresses"`
+		Hostname   string    `gorethink:"hostname"`
+		DriverPort int       `gorethink:"reql_port"`
+	} `gorethink:"network"`
+	Process struct {
+		Version      string    `gorethink:"version"`
+		RunningSince time.Time `gorethink:"time_started"`
+	} `gorethink:"process"`
+}
+
+type Address struct {
+	Host string `gorethink:"host"`
+	Port int    `gorethink:"port"`
+}
+
+type stats struct {
+	Engine Engine `gorethink:"query_engine"`
+}
+
+type Engine struct {
+	ClientConns   int64 `gorethink:"client_connections,omitempty"`
+	ClientActive  int64 `gorethink:"clients_active,omitempty"`
+	QueriesPerSec int64 `gorethink:"queries_per_sec,omitempty"`
+	TotalQueries  int64 `gorethink:"queries_total,omitempty"`
+	ReadsPerSec   int64 `gorethink:"read_docs_per_sec,omitempty"`
+	TotalReads    int64 `gorethink:"read_docs_total,omitempty"`
+	WritesPerSec  int64 `gorethink:"written_docs_per_sec,omitempty"`
+	TotalWrites   int64 `gorethink:"written_docs_total,omitempty"`
+}
+
+type tableStatus struct {
+	Id   string `gorethink:"id"`
+	DB   string `gorethink:"db"`
+	Name string `gorethink:"name"`
+}
+
+type tableStats struct {
+	Engine  Engine  `gorethink:"query_engine"`
+	Storage Storage `gorethink:"storage_engine"`
+}
+
+type Storage struct {
+	Cache Cache `gorethink:"cache"`
+	Disk  Disk  `gorethink:"disk"`
+}
+
+type Cache struct {
+	BytesInUse int64 `gorethink:"in_use_bytes"`
+}
+
+type Disk struct {
+	ReadBytesPerSec  int64      `gorethink:"read_bytes_per_sec"`
+	ReadBytesTotal   int64      `gorethink:"read_bytes_total"`
+	WriteBytesPerSec int64      `gorethik:"written_bytes_per_sec"`
+	WriteBytesTotal  int64      `gorethink:"written_bytes_total"`
+	SpaceUsage       SpaceUsage `gorethink:"space_usage"`
+}
+
+type SpaceUsage struct {
+	Data     int64 `gorethink:"data_bytes"`
+	Garbage  int64 `gorethink:"garbage_bytes"`
+	Metadata int64 `gorethink:"metadata_bytes"`
+	Prealloc int64 `gorethink:"preallocated_bytes"`
+}
+
+var engineStats = map[string]string{
+	"active_clients":       "ClientActive",
+	"clients":              "ClientConns",
+	"queries_per_sec":      "QueriesPerSec",
+	"total_queries":        "TotalQueries",
+	"read_docs_per_sec":    "ReadsPerSec",
+	"total_reads":          "TotalReads",
+	"written_docs_per_sec": "WritesPerSec",
+	"total_writes":         "TotalWrites",
+}
+
+func (e *Engine) AddEngineStats(keys []string, acc plugins.Accumulator, tags map[string]string) {
+	engine := reflect.ValueOf(e).Elem()
+	for _, key := range keys {
+		acc.Add(
+			key,
+			engine.FieldByName(engineStats[key]).Interface(),
+			tags,
+		)
+	}
+}
+
+func (s *Storage) AddStats(acc plugins.Accumulator, tags map[string]string) {
+	acc.Add("cache_bytes_in_use", s.Cache.BytesInUse, tags)
+	acc.Add("disk_read_bytes_per_sec", s.Disk.ReadBytesPerSec, tags)
+	acc.Add("disk_read_bytes_total", s.Disk.ReadBytesTotal, tags)
+	acc.Add("disk_written_bytes_per_sec", s.Disk.WriteBytesPerSec, tags)
+	acc.Add("disk_written_bytes_total", s.Disk.WriteBytesTotal, tags)
+	acc.Add("disk_usage_data_bytes", s.Disk.SpaceUsage.Data, tags)
+	acc.Add("disk_usage_garbage_bytes", s.Disk.SpaceUsage.Garbage, tags)
+	acc.Add("disk_usage_metadata_bytes", s.Disk.SpaceUsage.Metadata, tags)
+	acc.Add("disk_usage_preallocated_bytes", s.Disk.SpaceUsage.Prealloc, tags)
+}